Mathematics, 26.06.2019 00:50 Haleysaraya1
Eric starts with 10 milligrams of a radioactive substance. the amount of the substance decreases by 12 each week for a number of weeks, w. he writes the expression 10(12)w to find the amount of radioactive substance remaining after w weeks. andrea starts with 1 milligram of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. she writes the expression (1? 0.2)w to find the amount of radioactive substance remaining after w weeks. use the drop-down menus to explain what each part of eric's and andrea's expressions mean. clear check eric's expression: 10(12)w 12: w: 10: (12)w: andrea's expression: (1? 0.2)w w: 0.2: 1? 0.2:
Answers: 1
Mathematics, 21.06.2019 17:00
Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?
Answers: 2
Mathematics, 21.06.2019 19:10
The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) β x + 2y = 15 (4x β 8y = 12) β x β 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)
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Mathematics, 21.06.2019 21:00
How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?
Answers: 3
Mathematics, 21.06.2019 21:00
Ireally need subtract and simplify.(-y^2 β 4y - 8) β (-4y^2 β 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.
Answers: 1
Eric starts with 10 milligrams of a radioactive substance. the amount of the substance decreases by...
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